I'm raising valid points about his credentials.
Well, I went back and checked and it appeared it was Martinez in post # 30 of this thread who gave an address in Spanish from the floor.
As for the other points, check out
http://www.freerepublic.com/focus/f-news/1329455/posts
http://www.freerepublic.com/focus/f-chat/1325621/posts
http://www.freerepublic.com/focus/f-news/1323419/posts
All from Free Republic.
Michele Malkin on the O'Reilly factor stated that Gonzales is a high level official with La Raza. La Raza has its own website, endorses Gonzales and is quite clear with its positions.